John Vilk f10c7cc154 Change ArrayBuffer.isView declaration to type guard for ArrayBufferView.
Also adds a test that checks that `ArrayBuffer.isView` appropriately narrows its argument to `ArrayBufferView`.

Fixes #5308.
2015-10-18 20:05:30 -04:00
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2015-04-13 22:20:37 +03:00
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